CN218301205U - Frequency conversion module of control instrument - Google Patents
Frequency conversion module of control instrument Download PDFInfo
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- CN218301205U CN218301205U CN202222518584.4U CN202222518584U CN218301205U CN 218301205 U CN218301205 U CN 218301205U CN 202222518584 U CN202222518584 U CN 202222518584U CN 218301205 U CN218301205 U CN 218301205U
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Abstract
The utility model discloses a control instrument frequency conversion module relates to the instrument control technique, when aiming at solving and adjusting the converter frequency by a wide margin, need point long press the button, the problem of inconvenient use, and its technical scheme main points are: the mode selection relay is connected with the trigger and responds to a trigger signal to disconnect the self-reset button from the eight-bit shift register circuit; the analog quantity terminal is connected with the adjusting knob and responds to the rotation of the adjusting knob to modulate and output the bit-complementing data signal; the analog quantity terminal is coupled with the eight-bit shift register circuit and responds to a trigger signal to convey a complementary bit data signal. The utility model discloses well benefit position data signal passes through the analog quantity terminal and is connected the output with adjust knob, realizes through adjust knob's rotation quick to the regulation of frequency, then after accomplishing the regulation, the disconnection of selection mould relay can realize carrying out accurate regulation through from the reset button, has improved the efficiency that people adjusted.
Description
Technical Field
The utility model relates to an instrument control technique, more specifically say, it relates to a control instrument frequency conversion module.
Background
The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor, and mainly comprises a rectification unit (alternating current to direct current), a filtering unit, an inversion unit (direct current to alternating current), a braking unit, a driving unit, a detection unit and a microprocessing unit. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off the internal I GBT, and provides the required power supply voltage according to the actual requirement of the motor, thereby achieving the purposes of energy conservation and speed regulation.
The anti-surge frequency converter disclosed in the chinese patent with publication number CN206498334U has the technical key points that: the converter surface is equipped with display panel, and display panel one side is equipped with adjustment button, and the converter inner chamber is equipped with the rectifier, and the rectifier top is equipped with the fixed bolster, and the rectifier bottom is equipped with the base, and the fixed bolster surface is equipped with gas discharge tube, and gas discharge tube one side is equipped with surge protector, and base one side is equipped with temperature-sensing ware, and the base bottom is equipped with the earth connection.
The frequency converter is commonly used for controlling electrical equipment in the industrial industry, such as a servo motor, the control of a cloth feeding thread is controlled in application by adjusting the rotating speed of the servo motor in the textile sizing industry, or the adjustment of the running power of a control fan is achieved on ventilation equipment, the frequency converter on the market at present adopts key type single-thread frequency adjustment, single adding/subtracting operation is carried out on the number of the frequency by pressing a button once, or the frequency is quickly adjusted by pressing a key for a long time, but the key is required to be pressed by a finger for a long time while the adjustment is carried out, so that the frequency converter is inconvenient to use.
Therefore, a new solution is needed to solve this problem.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a control instrument frequency conversion module.
The above technical object of the present invention can be achieved by the following technical solutions: a frequency conversion module of a control instrument comprises an operation panel and a control circuit board, wherein an operation button and an adjusting knob which are connected with the control circuit board are arranged on the operation panel;
be equipped with control signal input circuit and display circuit on the control scheme board, control signal input circuit includes:
self-reset buttons which are arranged in parallel with each other and respond to the closing of the self-reset buttons to output low-level signals;
the eight-bit shift register circuit is sequentially connected with the self-reset button and responds to a low level signal to increase or decrease the serial signal registered in the shift register circuit;
the coding and decoding circuit is connected with the eight-bit shift register circuit and the display circuit and acquires serial signals to decode and transmit the serial signals to the display circuit;
the self-reset buttons are coupled with triggers through OR gate logic circuits, and the triggers respond to continuous pressing of any one self-reset button to output trigger signals;
the mode selection relay is connected with the trigger and responds to a trigger signal to disconnect the self-reset button from the eight-bit shift register circuit;
the analog quantity terminal is connected with the adjusting knob and responds to the rotation of the adjusting knob to modulate and output the bit-complementing data signal;
the analog quantity terminal is coupled with the eight-bit shift register circuit and responds to a trigger signal to convey a complementary bit data signal.
By adopting the technical scheme, the self-reset buttons realize the operation of adding and subtracting the frequency converter one by one through point contact self-reset buttons, on the basis, through setting an eight-bit shift register circuit, digital signals after being sequentially added and subtracted are shifted and stored, when people want to perform large-amplitude frequency modulation operation on the inlet and outlet of the frequency converter, the self-reset buttons are continuously pressed only, a trigger signal is remembered to be output through a trigger, when the trigger signal triggers the mode selection relay, the connection between the self-reset buttons and the eight-bit shift register circuit is disconnected at the same time, the frequency modulation operation of the self-reset buttons is limited, meanwhile, an analog quantity terminal is coupled with the eight-bit shift register circuit, the compensation data signals are transmitted to the eight-bit shift register circuit to be superposed, the compensation data signals are connected with the adjusting knob through an analog quantity terminal, the frequency can be quickly adjusted through the rotation of the adjusting knob, then after the adjustment is completed, the mode selection relay is disconnected, the accurate adjustment can be realized through the self-reset buttons, and the adjustment efficiency of people is improved.
The utility model discloses further set up to: the self-reset button comprises an increase button and a decrease button, the increase button or the decrease button is connected with a pull-up resistor in series to a power supply, and the terminals of the increase button or the decrease button and the pull-up resistor are electrically connected with potential points connected with an OR gate logic circuit and an eight-bit shift register circuit.
By adopting the technical scheme, the increase button and the decrease button of the self-reset button terminal are used for addition and subtraction operation, and the connection pull-up resistor is connected to the power supply, so that a low level signal is output to the eight-bit shift register circuit and the trigger when the increase button is closed.
The utility model discloses further set up to: the eight-bit shift register circuit comprises a shift register based on an HC165A chip, the shift register is connected with an inverter group through a wiring board, and the inverter group is connected with the coding and decoding circuit.
By adopting the technical scheme, the serial signals processed by the shift register also pass through the phase inverter group, clutter signals in the signals can be eliminated, and the precision of signal waveforms is improved.
The utility model discloses further set up to: the encoding and decoding circuit comprises a first decoding circuit and a second decoding circuit which are formed by two HC595AG chips arranged in parallel, wherein SCLK input ends of the first decoding circuit and the second decoding circuit are connected to an output end of an inverter group together.
By adopting the technical scheme, the first decoding circuit and the second decoding circuit are simultaneously connected with the output end of the inverter group, so that the current signal condition can be synchronously acquired, and synchronous decoding can be carried out.
The utility model discloses further set up to: the output end of the first decoding circuit is electrically connected with a display driving module, and the display driving module is coupled with the display circuit.
By adopting the technical scheme, the first decoding circuit is coupled with the display circuit through the display driving module, so that the display driving module is driven to operate by the compiled signal, and the display circuit is stably driven to display at the same time.
The utility model discloses further set up to: the second decoding circuit is provided with seven parallel output ends, each seven parallel output ends are sequentially connected with a switch triode, and an emitting electrode of each switch triode is connected with a current-limiting resistor in series to the display circuit.
By adopting the technical scheme, the seven sections of parallel output ends arranged by the second decoding circuit are connected with the display circuit through the switching triode, and the display circuit can be stably driven to display the numerical value matched with the serial data.
The utility model discloses further set up to: the display circuit comprises a five-position seven-segment digital tube and a plurality of indicator lamp sets, wherein the indicator lamp sets are connected with emitting electrodes of the switching triodes in series.
By adopting the technical scheme, the display circuit is not only provided with the five-position seven-segment digital tube, but also provided with the indicating lamp group connected with the corresponding switch triode in series, so that another standard can be provided, and the working state of the five-position seven-segment digital tube is judged by the on-off of the indicating lamp group.
The utility model discloses further set up to: the mode selection relay is connected with the trigger in series, a controlled switch of the mode selection relay comprises a normally open switch and a normally closed switch group, the normally closed switch group is respectively connected in series in a connecting loop of the increase key or the decrease key and the eight-bit shift register circuit, and the analog quantity terminal is connected with the eight-bit shift register circuit through the normally open switch.
By adopting the technical scheme, the normally open switch and the normally closed switch group are arranged, so that the simultaneous response of the self-reset button signal input and the complement data signal input can be realized, and the response efficiency of the frequency converter is accelerated.
To sum up, the utility model discloses following beneficial effect has:
the self-reset buttons realize that the frequency converter is subjected to the operation of adding and subtracting one by one through point contact of the self-reset buttons, on the basis, an eight-position shift register circuit is arranged, digital signals subjected to sequential addition and subtraction are shifted and stored, when people want to perform large-amplitude frequency modulation operation on the frequency converter, the self-reset buttons are only required to be continuously pressed, trigger signals are recorded to be output through triggers, when the trigger signals trigger a mode selection relay, connection between the self-reset buttons and the eight-position shift register circuit is disconnected at one time, the frequency modulation operation of the self-reset buttons is limited, meanwhile, an analog quantity terminal is coupled with the eight-position shift register circuit, a compensation data signal is transmitted to the eight-position shift register circuit to be superposed, the compensation data signal is connected with an adjusting knob through the analog quantity terminal, the frequency can be quickly adjusted through rotation of the adjusting knob, then after adjustment is completed, the mode selection relay is disconnected, accurate adjustment through the self-reset buttons can be realized, and the adjustment efficiency of people is improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic circuit diagram of the eight-bit shift register circuit of the present invention;
fig. 3 is a schematic circuit diagram of the middle encoding/decoding circuit of the present invention.
In the figure: 1. an operation panel; 2. adjusting a knob; 3. a self-reset button; 4. an eight-bit shift register circuit; 5. a coding and decoding circuit; 6. a display circuit; 7. a trigger; 8. a mode selection relay; 9. adding keys; 10. Subtracting the key; 11. an inverter group; 12. and a display driving module.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
A frequency conversion module of a control instrument is shown in figures 1 to 3 and comprises an operation panel 1 and a control circuit board, wherein an operation button and an adjusting knob 2 which are connected with the control circuit board are arranged on the operation panel 1;
be equipped with control signal input circuit and display circuit 6 on the control scheme board, control signal input circuit includes:
self-reset buttons 3, which are arranged in parallel with each other, and output a low level signal in response to the self-reset buttons 3 being closed;
an eight-bit shift register circuit 4, which is connected with the self-reset button 3 in sequence and responds to the low level signal to increase or decrease the serial signal registered in the shift register circuit;
the coding and decoding circuit 5 is connected with the eight-bit shift register circuit 4 and the display circuit 6, acquires serial signals, decodes the serial signals and transmits the serial signals to the display circuit 6;
the self-reset buttons 3 are coupled with triggers 7 through an OR gate logic circuit, and the triggers 7 respond to the continuous pressing of any one self-reset button 3 to output trigger signals;
the mode selection relay 8 is connected with the trigger 7, responds to a trigger signal to disconnect the connection between the self-reset button 3 and the eight-position shift register circuit 4, specifically, the mode selection relay 8 is connected with the trigger 7 in series, the mode selection relay 8 is a clock relay, through the selection of the model, the mode selection relay 8 is automatically disconnected and reset after being sucked for 10-30s, a controlled switch of the mode selection relay 8 comprises a normally open switch and a normally closed switch group, the normally closed switch group is respectively connected in series in a connecting loop of the increase key 9 or the decrease key 10 and the eight-position shift register circuit 4, and an analog quantity terminal is connected with the eight-position shift register circuit 4 through the normally open switch;
the analog quantity terminal is connected with the adjusting knob 2 and responds to the rotation of the adjusting knob 2 to modulate and output a complementary bit data signal;
the analog quantity terminal is coupled with the eight-bit shift register circuit 4 and responds to the trigger signal to transmit the complementary bit signal.
As shown in fig. 1 and 2, the self-reset button 3 comprises an increase button 9 and a decrease button 10, the increase button 9 or the decrease button 10 is connected with a pull-up resistor in series to a power supply, the terminals of the increase button 9 or the decrease button 10 and the pull-up resistor are electrically connected with a potential point connected with an or gate logic circuit and an eight-bit shift register circuit 4, wherein the eight-bit shift register circuit 4 comprises a shift register based on an HC165A chip, the shift register is connected with an inverter group 11 through a wiring board, and the inverter group is connected with an encoding and decoding circuit 5.
As shown in fig. 3, the coding and decoding circuit 5 includes two HC595AG chips arranged in parallel to form a first decoding circuit and a second decoding circuit, SCLK input terminals of the first decoding circuit and the second decoding circuit are connected to an output terminal of the inverter group, wherein an output terminal of the first decoding circuit is electrically connected to the display driving module 12, the display driving module 12 is coupled to the display circuit 6, and the second decoding circuit has seven parallel output terminals, each of the seven parallel output terminals is sequentially connected to a switching triode, an emitter of the switching triode is connected in series to the current-limiting resistor to the display circuit 6, in this embodiment, the display circuit 6 includes a five-bit seven-segment digital tube and a plurality of indicator light groups, and the indicator light groups are connected in series to the emitter of the switching triode.
The frequency converter is characterized in that a single pressing of an increasing button 9 and a decreasing button 10 is carried out on a terminal of a self-reset button 3, the frequency converter is subjected to one-by-one addition and subtraction operation through point contact of the self-reset button 3, in addition, a pull-up resistor is connected to a power supply, when the adding button is closed, a low-level signal is output to an eight-bit shift register circuit 4 and a trigger 7, due to the arrangement of grounding, the low-level signal has higher precision, the interference of noise waves and drift voltage to the circuit is eliminated, on the basis, the digital signal subjected to sequential addition and subtraction is subjected to shift storage through the arrangement of the eight-bit shift register circuit 4, when people want to carry out large-amplitude frequency modulation operation on the frequency converter, the self-reset button 3 is continuously pressed, the trigger signal is recorded to be output through the trigger 7, when a mode selection relay 8 is triggered by the trigger signal, the connection of the self-reset button 3 and the eight-bit shift register circuit 4 is disconnected, the frequency modulation operation of the self-reset button 3 is limited, meanwhile, the analog register terminal is coupled with the eight-bit shift register circuit 4, the compensation data signal is connected with the eight-bit shift register circuit 4 through an analog adjusting button, the adjusting button 2, and the adjusting knob, the frequency adjusting knob is quickly adjusted through the adjustment knob, and the adjustment knob, the adjustment efficiency can be improved after the adjustment knob is adjusted.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.
Claims (8)
1. The utility model provides a control instrument frequency conversion module which characterized in that: the device comprises an operation panel (1) and a control circuit board, wherein the operation panel (1) is provided with an operation button and an adjusting knob (2) which are connected with the control circuit board;
be equipped with control signal input circuit and display circuit (6) on the control scheme board, control signal input circuit includes:
self-reset buttons (3) which are arranged in parallel with each other and output low-level signals in response to the self-reset buttons (3) being closed;
an eight-bit shift register circuit (4) which is connected with the self-reset button (3) in sequence and responds to a low level signal to increase or decrease the serial signal registered in the shift register circuit;
the coding and decoding circuit (5) is connected with the eight-bit shift register circuit (4) and the display circuit (6) and acquires serial signals to decode and transmit the serial signals to the display circuit (6);
the self-reset buttons (3) are coupled with triggers (7) through OR gate logic circuits, and the triggers (7) respond to the continuous pressing of any one self-reset button (3) to output trigger signals;
the mode selection relay (8) is connected with the trigger (7) and responds to a trigger signal to disconnect the self-reset button (3) from the eight-bit shift register circuit (4);
the analog quantity terminal is connected with the adjusting knob (2) and responds to the rotation of the adjusting knob (2) to modulate and output a bit-complementing data signal;
the analog quantity terminal is coupled with an eight-bit shift register circuit (4) and responds to a trigger signal to convey a complementary bit data signal.
2. The control instrument frequency conversion module of claim 1, wherein: the self-reset button (3) comprises an increase button (9) and a decrease button (10), the increase button (9) or the decrease button (10) is connected with a pull-up resistor in series to a power supply, and terminals of the increase button (9) or the decrease button (10) and the pull-up resistor are electrically connected with potential points connected with an OR gate logic circuit and an eight-bit shift register circuit (4).
3. The control instrument frequency conversion module of claim 1, wherein: the eight-bit shift register circuit (4) comprises a shift register based on an HC165A chip, and an inverter group (11) is connected with the shift register through a wiring board and is connected with the coding and decoding circuit (5).
4. The control instrument frequency conversion module of claim 3, wherein: the coding and decoding circuit (5) comprises a first decoding circuit and a second decoding circuit which are formed by two HC595AG chips arranged in parallel, and SCLK input ends of the first decoding circuit and the second decoding circuit are connected to an output end of the inverter group together.
5. The frequency conversion module of control instrument of claim 4, wherein: the output end of the first decoding circuit is electrically connected with a display driving module (12), and the display driving module (12) is coupled with the display circuit (6).
6. The frequency conversion module of control instrument of claim 4, wherein: the second decoding circuit is provided with seven sections of parallel output ends, each seven section of parallel output ends are sequentially connected with a switch triode, and an emitting electrode of each switch triode is connected with a current-limiting resistor in series to the display circuit (6).
7. The frequency conversion module of control instrument of claim 6, wherein: the display circuit (6) comprises a five-position seven-segment digital tube and a plurality of indicator lamp groups, and the indicator lamp groups are connected with emitting electrodes of the switching triodes in series.
8. The frequency conversion module of control instrument of claim 2, wherein: the model selection relay (8) is connected with the trigger (7) in series, a controlled switch of the model selection relay (8) comprises a normally open switch and a normally closed switch group, the normally closed switch group is connected with a connection loop of the increase key (9) or the decrease key (10) and the eight-bit shift register circuit (4) in series respectively, and the analog quantity terminal is connected with the eight-bit shift register circuit (4) through the normally open switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222518584.4U CN218301205U (en) | 2022-09-22 | 2022-09-22 | Frequency conversion module of control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222518584.4U CN218301205U (en) | 2022-09-22 | 2022-09-22 | Frequency conversion module of control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218301205U true CN218301205U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222518584.4U Active CN218301205U (en) | 2022-09-22 | 2022-09-22 | Frequency conversion module of control instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218301205U (en) |
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2022
- 2022-09-22 CN CN202222518584.4U patent/CN218301205U/en active Active
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